"The Seagate GoFlex Slim 320GB portable drive caught us a little off guard when it arrived. We weren't sure what to expect, but in the end we found ourselves pleasantly surprised to find a portable drive that was fast, lightweight, small and looked good. Usually, you can't find a way to blend all those features together without making sacrifices along the way, but that doesn't appear to be the situation we have here today. In order to take full advantage of this drive you really need to have a USB 3.0 interface! With CrystalDiskMark we saw the GoFlex Slim 320GB drive peak at ~120MB/s read and ~118MB/s write, so if you've been using a USB 2.0 drive and are stuck at ~31MB/s write speeds you'll see nice performance gains!"